Update 3.10.0a3.rst

Author: LamentXU123

Misc/NEWS.d/3.10.0a3.rst

@@ -394,7 +394,7 @@ Removed the ``formatter`` module, which was deprecated in Python 3.4. It is
 somewhat obsolete, little used, and not tested. It was originally scheduled
 to be removed in Python 3.6, but such removals were delayed until after
 Python 2.7 EOL. Existing users should copy whatever classes they use into
-their code. Patch by Donghee Na and and Terry J. Reedy.
+their code. Patch by Donghee Na and Terry J. Reedy.
 
 ..